hole shape:long square hole, square hole, round hole,triangle hole, hexagonal hole, the plum blossom hole,

 ichthyosisthe hole,scale hole and other different kinds of hole,The company can process the different kinds of

 type accroding the customer order. 
Uses:be used to civil construction, mechanical device protection, handicraft manufacture, upscale sound heartcover,

 grain ventilates. It also can be used in architectural, the road, the bridge.The product quality has achieved the national

 standard and the profession examination standard.